Train-stopping system.



J. F. WEBB, JR; TRAIN STOPPING SYSTEM. APPLICATION FILED AUG. 15, 1908.

932,923. I Patented Aug. 31,1909.

UN-HE PATENT GER/E.

SEAN IF. WEBB, 3R., NEW YORK, ll. Y., ASSZGNOR TO THE ELECTRIC SIGNAGRAPH AND I SEEAPHOEE CGMPANY, INGGRPORATED, QFNEW YORK, N. Y.

'r'n-ern-s'roermc SYSTEM. 7

Specification of Letters Patent.

Application filed iingnstlfi, 1998. Serial No. 448,649.

stopping system in which means'are probrought into operation to open when the 'b thefli'ain consists of the air a train at predetermined vidcd for stopping taken of a places and inwhich advantage is closed electric'circuit, tlms making the system whatis known in the art as aclosed circuit systezn: j

More especially the invention embodies a train stopping system of .the general type disclosed in the co-pending; application filed by myself and Jean F. lVebb, on May 12, 1908, Serial No. 32,330.

In the present system, dition to the engineers the'air brake sys'teni of'a train, which valveis motor operated to open the same, the motor being electrically connected through a motor circuit and relay inechanisni and is the air valve local closed circuit, containing the train carried contacts, is broken, in any manner,

' In this application an air valve in ad- 18 introduced into lion, but may be found advantageons in other relations, and I make no claim, per 36, in this application to such contact maker as that forms the subject-matter of a copendingdivisional application filed May 26,1908, Ser. No. 550,367. -v In its subordinatenature, this invention embodies those novel details of construc tjon and cooperative arrangement of parts, all of which will be first fully describedand then be specifically pointed out in .the appended claims, reference accompanying drawing, which is a diagrammatic figure illustrating'my invention and showing; a semaphore switch connected with the track contacts for controlling the track circuit between a pair of track contacts.

Referring" now to the accompanyingdrawing, in which like numerals and letters of -reference indicate like parts in the figure,

that part of my invention which is carried valve. 1".

another contact maker 10 I have disclosed animproved contactmaker which is particularly adapted for nse in my present invenbeing had to the' whose stem 1 carries a gear 1 that meshes with a pinion 2 of an electric motor 2, the

gear 1* being provided with a pin 1 and a handle 1 for a, purpose presently to appear;

8 designates a train carried source of electric energy, one terminal .8 of which connects through a wire 8' with a contact shoe 10 at one side of the train and also through a wire T to one terminal of the motor 2. The other terminal 8 of the local source of energy 8 connect-s through a wire S-Wit-h one terminal of arelay magnet 3, the other terminal -3" of which connects with a resilient. fixed contact? that engages the armature l of the relay when the parts are posh tioned. as shown in the figure. The ter- Patented Aug. '31, 1909.

Jilllltll 8 of the battery or source of energy 8 also connects through a wire 8' with a lixcd contact 5 of a pair oi. contacts 5,the other one (i, of which connects through a wire 7 to the other terminal of the motor 2.

The circuit between lixed'contacts 5-6 is adapted to be the arliiatnre i when the magnet 3 becomes .deener'gize d. The armature 4 ispivoted at a and is connected through a wire 4 with side of the train.

Each conlsctmaker '10 comprises a metal lic plate 10 having bristles 10 to engage the track contacts 11,

closed by" the contact 4 on art-the opposite and beneath theiplate 10" a shoe 10 is mounted, the shoe 10 being con ne'ctcd to a rod 10, which projects through an aperture in the plate 10* and has a split head 10 through which a pin 10 passes to connect the head I0 to the knife 19 of a knife switch, the knife 12 being; pivoted at 12 and in electrical connection 'withthc plate 10; Each switch 10 also includes a fixed contact 12 insulated from the plate 10, and the contacts 12 of ca ch shoe 10 a re connected together by'a wire 13 so when the knives-12 arein engagement with the contacts 12 the circuit ircm the. battery through the re-' lay magnet.- C-l andlhe contact nmke'rs 10 will be, closed. I

A spring (not shown) on the rod l0 beneatlrthe plate 10 may be provided to assist the force of gravity in closing the knives 12 against the contacts 1'2". asshown in my contact makerapplication hcrcinbel'orc rci'crred to. f 4

' lnjthe practical application ot my invention pairs oftrack contacts 11 may be placed at suitable intervals along the track so when they are engaged by 'the shoes 10 hey will open the local normally closed train carried circuit and permit the motor circuit to be closed by the armature 4 to' open the air valve, Y

In order to effect a ositive control of the train carried part or the train stopping mechanism suitable means are provided for electrically connecting each of a pair of track contacts 11, under normal conditions, so that the train may pass such contacts without actuating .the train stopping mechanism,

when desired. These means may consist of a semaphore switch l i comprising a knife 14 mounted on the shaft 14; of a semaphore mechanism 14 and cooperatin wi'. fixed contacts 14 and let respectivdly, the fixed contacts 14 and 14: being respectively connected through wires 14 14 to the track contactsll, as shown in the drawing. The semaphore blade is indicated by 1% in the drawing.

So far as described, the manner in which my invention operates when the train stopping mechanism is con-trolled by the action of a semaphore is as follows: Assume the train to be passing along the track carrying its brush shoe members 10-10 and a local source of electrical energy 8, together with the magnet 8, motor 2 and air valve 1 and the cooperating parts; as soon as the train arrives at the pair of track contacts 11, the brush shoe members will engage such contacts and electrically connect therewith. At the same time the shoe 10 will ride up on such contacts and break the circuit between the knives 12 and the-fixed,cont-acts 12f.

Should the semaphore 14 be in its safety position with the circuit between the knife 14 and the fixed contacts 14: and 14: of the switch 14 closed, then-the current will continue to flow through the magnet 3, irrespective of the opening of the circuit by the knife switches of the brush shoe since the current. instead of flowing across the short circuit bridge 13 will flow through the wires 14 and 14 and the semaphore switch. Should, however, the circuit be broken at the semaphore'by having the semaphore in its danger position then as soon as the brush shoes are in engagement with the track contacts 11 and the circuit broken between the knives 12 and the fixed contacts 12 of the knife switches on the brush shoe, no current will flow through the magnet 3 and hence the armature 4 will drop, breaking the circuit between the brush 3* and the armature 4, and at the same time closin the local circuit through the contacts 5 an (3,- and thus energize the motor 2 which causes it to rotate to open the air valve 1.

As soon as the valve 1* has been opened the lug 1 will'engage the armature 4, an

raise the same to break contact between the fixed contacts 5 and 6 of the motor circuit and at the same time will again close the cir cuit at the contact 3 and the armature i, for as soon as the brush shoes have left the track contacts 11 and the knife switches carried thereby have again closed the short circuiting means, the current will, as soon as the armature 4 has been raised, again flow through the magnet- 3 and hold the armature 4 in its raised position.

As soon as the train has come to a. stop, the engineer may get out of his cab and return the valve 1 to its closed position by grasping the handle 1* and turning the gear 1 backward a predetermined distance.

What I claim is:

1. In a train stopping mechanism, an air brake system of a train including an air valve, a motor connected with said valve for opening the same, a normally closed train carried circnit,-a relay having its magnet in said circuit, a train carried source of electric energy in said circuit, a train carried contact member in said circuit, means mounted on said contact member for opening said circuit at times to deenergize said relay, means independent of the. train for engaging said contact member to cause it to open the circuit, means controlled by the relay for operating the motor when the relay magnet becomes deenergized, and means forming a part of said relay for breaking the circuit through the relay magnet independent of the train carried contact member.

2. In a train stopping mechanism, an air brake system of a train, including an air valve, a motor connected with said valve for opening the same, a normally closed train carried circuit, a relay having its magnet in said circuit, a train carried source of electric energy in said circuit, a train carriedcontact member in said circuit, means mounted on said contact member for opening said circuit at times to deenergize said relay, means independent'of the train for engaging said contact member to cause it to open the circuit, means controlled by the relay for operating the motor when the relay magnet becomes deenergized, means cooperating with said independent means for renderingsaid independent means inoperative at times to prevent it from opening the train carried circuit, and means forming a part of. said relay for breaking the circuit through the relay magnet .independent of the train carried contact member.

'3. In a train stopping mechanism, an air brake system of a train including an air valve, a train carried normally closed electric circuit including a source of electric energy, a train carried contact member having a circuit opening switch connected in said circuit, means mounted independent of the train for engaging said train carried contact maker to open the switch thereof to break said normally closed circuit at times, an auxiliary means coiipe means to render the same inoperative at times, an electric motor geared with the stem of said air valve to open the same, a relay having its magnet connected in said closed circuit and controlling said motor to bring it into operation when the relay magnet becomes deencrgized, and means "forming a part of id relay for independently breaking the circuit through the relay magnet when the motor circuit is close 1 by the relay.

4. In a train stopping mechanism, an air brake system of a, train including an air valve, train carried normally closed electric circuit including a source of electric en orgy, a train carried contact member having a circuit opening. switch. connected in said circuit, means mounted independent of the traintor engaging said train carriedcontact maker to open the switch thereof to break said normally closed circuit at times, an ant;- iliary means coiiperating, with said breaking meansto render the same inoperative at times, an electric motor geared with the stem of said air valve to open'the same, a relay having its magnet connected in said closed circuit and controlling said motor to. bring it into operation when,the relay magnet becomes deiinergized, and means forming a part of said relay for independently breaking the circuit through the-relay magnet when the motor circuit is closed by the relay, and means for restoring said last named breaking means to close thcflrelay magnetcireuit at such means and simultaneously hreakin the motor clrcuit to sto the motor.

is P

In a train stopping system, a closed train carried circuit, an air valve adapted to' connect to the air brakosystem of the train, an electric motor for operatingsaid air valve, a relay having a circuit-closing armature, a pairof contacts adapted to be closed whensaid armature is released, connections between one of said contacts and the motor, a train carried source of electric energy con- 'i-iccted to one of said relay contacts and'to' the other terminal of the motor, said relay including a magnet ha 'ing one of its termina ls connected with one terminal of'said source ot electric energy, said relay including ano her contact connected with the other terminal of said relay magnet and engaging said armature when the magnet is energized, apair of train carried circuit controlling shoe switches, to oneoi which one terminal of said source of electric energy is connected, connections between the other shoe switch and the armature of the relay, said shoe switches-each including, a movable contact and a fixed contact, aid fixed contacts being in electrical connection with one another, and means -independent of the train and cooperating .with said shoe switches to open 1 to deencrs-"ze ating with said breaking the circuit at the shoe switches at times to dei nergize the relay magnet and permit the armature to close the motor circuit.

G. In a trainstopping system, a closed train carried circuit, an air valve adapted to "connect to the air brake system of the train, an electric motor for operating said air valve. a relay having a circuit closing armature, a pair of contacts adapted to be closed when said' armature is released, connect-ions between one of said contacts and the motor, a train carried source of electric energyconnected to one of said relay contacts and to the other terminal of the motor, said relay including a magnet having one of its terminals connected with one terminal of said source of electric energy, said relay including another contact connected with the other terminal of said relay magnet and engaging said armature when the magnet is energized, a pair of train carried circuit controlling shoe switches, to one of.whie h one terminal of said source of electric energy is connected, connections between the other shoe switch and the armature of the relay,

said shoe switches each includinga movable fixed concontact and a fixed contact, sai tacts being in electrical connection with one another and means independent of the train and cooperating with said shoe switches to open the'circuit at the shoe switches at times to 'denergize the relaymagnet and permit he armature to close the motor circuit and open the relay magnet circuit between the fixed contact thatjoins with the magnet and the armature.

7. In a train stopping system, a closed train carried-circuit, an air valve adapted toconn'ect to the air brake system of a train, an electric motor for operating said air valve, arelay having a circuit closing armature, a pair of contactsadapted to be closed when said armature is released, connections between one of said contactsand themot-or, a train carried source of electric energy connected to one of said relay contacts and i to the other terminal of the motor, said relay including a magnet having one of its terminals connected with one terminal of said source of electric energy, said relay including-another contact connected with the' other terminal of said relay magnet and engaging lS energized, a pair of train carried circuit controlling shoe switches, to one of whi one terminal of said source of electric'energy is connected, connections'betwecn the other shoe switch and the armature of the relay,

said shoe switches each including a movable contact and a' fixed contact, said fixed con; tacts bemg in electrical connection with one another, means independent of the train and cooperating with said shoe switchesto open the circuit at. the shoe switches at times the relay magnet and permit said armature when the magnet the armature to close the motor circuit, and I means controlled by the motor to engage said relay armature to break the motor circuit and close the magnet circuit at the armature at times. v

85111 a train stopping systenna closed train carried circuit, an air valve adapted to connect to the air brake system of the train, an electric motor for operating said air valve, a relay having a circuit closing armature, a pair of contacts adapted to be closed when said armature is released, connections between one of said contacts and the motor, a train carried source or" electric energy connected to one of said relay contacts and to the other terminal of themotor, said relay including a magnet having one of its terminals connected with one terminal of said source of electric energy, said relay including another contact connected with the other terminal of said relay magnetand engaging said armature when. the magnet is energized, a pair of train carried circuit controlling shoe switches, to one of which one terminal of said source of electric energy is connected, connections between the other shoe switch and the, armature of the relay, said shoe switches each including a movable contact and a fixed contact, said fixed contacts being in electrical connection with one another, and means independent of the train and cooperating with said shoe switches to open the circuit at the shoe switches at times to denergize the relay magnet and permit the armature to close the motor circuit and open the relay magnetcircuit between the fixed contact that joins with the magnet and the armature, and means controlled by the motor to engage said relay armature to break the motor circuit and close the magnet circuit at the armature at times.

9. In a train stopping mechanism, an air brake system of a tram including an air valve, an electric motor for opening said air valve, a relay having armature controlled contacts, a motor circuit including a source of electric energy, said armature controlled contacts and the motor, said relay having a i'nagnet, a normally closed train carried electrically operating circuit including said relay magnet and said source of electric en-. ergy, a pair of train carried contact makers connected in'said operating circuit, circuit opening switches carried by each of said contact makers, said switches being electrically connected in series with one another and in said operating circuit, means mounted independent of the train for engaging said contact makers to open said switches to break said normally closed operating circuit at times.

10. In a train stopping mechanism, an air brake system of a .train, including an air valve, an electric motor for opening said air valve, a relay having armature controlled contacts, almotor circuit including a source of electric energy, said armature controlled contacts and the motor, said relay having a magnet, a normally closed tram carried electrically operating circuit including said relay magnet and said source of electric en ergy, a pair of train carried contact makers connected in said operating circuit, circuit opening switches carried by each of said contact makers, said switches being electrically connected in series with one another and. in said operating c1rcu1t, means mounted independent of the train for engaging saidcontact makers to open said switches to break said normally closed operatin circuit at times, and auxiliary means independent of the train for short-circuiting said contact makers at times to maintain the closed circuit when the switches are opened 11. In a train stopping mechanism an air brake system of a train including an air valve, an electric motor for opening said air connected in series with one another and in sald operating circuit, means mounted nde-' pendent of the train for engaging said contact makers to open saidswitches to break said normally closed operating circuit at times, auxiliary means independent of the train for short 'circuiting said contact mak; ers at times to maintain the closed circuit when the switches are opened, and means independent of said contact makers for open: ing the circuit through said relay magnet whilethe motor is operating.

12. In a train stopping mechanism, an air brake system of a train including ,an air valve, an electric motor for opening said air valve, a relay having armature controlled contacts, a motor circuit includi mg a source of electric energy, said armatr 1 controlled contacts and the motor, said relay having a magnet, a normally closed train carried electrically-operating circuit engaging said relay magnet and said source of electric en..-.

ergy, a pair of train carried contact makers connected in said operating circuit, circuit opening switches carried by each of said contact makers, said switches being electrically connected in series with one another and in said o 'ierating circuit, means mounted independent of the train for engaging said contact makers to open said switches to break said normally closed operating circuit at times, auxiliary means independent of the train for short-circuiting said contact makass at times to maintain the elesed circuit when the switches are opened, means independent of said contact makers f0! 'epening the circuit through said. relay magnet While the meter is operating, and mechanical meansfor restoring the circuit a .fsongh the relay mag-nee at such independent breaking means and simultaneously breaking the motor circuit.

JEAN F. XVEBB, JR. Witnesses A. E. DIETERICH, JOHN "1. Salmon". 

